java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:30:33,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:30:33,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:30:33,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:30:33,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:30:33,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:30:33,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:30:33,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:30:33,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:30:33,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:30:33,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:30:33,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:30:33,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:30:33,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:30:33,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:30:33,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:30:33,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:30:33,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:30:33,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:30:33,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:30:33,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:30:33,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:30:33,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:30:33,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:30:33,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:30:33,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:30:33,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:30:33,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:30:33,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:30:33,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:30:33,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:30:33,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:30:33,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:30:33,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:30:33,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:30:33,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:30:33,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:30:33,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:30:33,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:30:33,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:30:33,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:30:33,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:30:33,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:30:33,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:30:33,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:30:33,617 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:30:33,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:30:33,618 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:30:33,618 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:30:33,618 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:30:33,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:30:33,618 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:30:33,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:30:33,621 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:30:33,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:30:33,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:30:33,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:30:33,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:30:33,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:30:33,622 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:30:33,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:30:33,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:30:33,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:30:33,623 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:30:33,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:30:33,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:33,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:30:33,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:30:33,624 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:30:33,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:30:33,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:30:33,625 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:30:33,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:30:33,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:30:33,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:30:33,687 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:30:33,687 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:30:33,688 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-09-20 13:30:33,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8664e10/bd00852b47034c81b012ea51e2bda16f/FLAG2fc3bd49c [2019-09-20 13:30:34,310 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:30:34,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-09-20 13:30:34,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8664e10/bd00852b47034c81b012ea51e2bda16f/FLAG2fc3bd49c [2019-09-20 13:30:34,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b8664e10/bd00852b47034c81b012ea51e2bda16f [2019-09-20 13:30:34,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:30:34,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:30:34,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:34,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:30:34,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:30:34,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:34" (1/1) ... [2019-09-20 13:30:34,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9c1821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:34, skipping insertion in model container [2019-09-20 13:30:34,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:34" (1/1) ... [2019-09-20 13:30:34,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:30:34,710 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:30:35,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,210 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:30:35,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:30:35,400 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:30:35,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35 WrapperNode [2019-09-20 13:30:35,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:30:35,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:30:35,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:30:35,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:30:35,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... [2019-09-20 13:30:35,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:30:35,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:30:35,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:30:35,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:30:35,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:30:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:30:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:30:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:30:35,591 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:30:35,592 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:30:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:30:35,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:35,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:35,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:35,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:30:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:30:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:30:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:30:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:30:35,596 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:30:35,597 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:30:35,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:30:35,597 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:30:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:30:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:30:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:30:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:30:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:30:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:30:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:30:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:30:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:30:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:30:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:30:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:30:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:30:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:30:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:30:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:30:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:30:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:30:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:30:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:30:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:30:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:30:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:30:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:30:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:30:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:30:35,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:30:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:30:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:30:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:30:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:30:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:30:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:30:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:30:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:30:35,609 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:30:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:30:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:30:35,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-09-20 13:30:35,611 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:30:35,612 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:30:35,612 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:30:35,612 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:30:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:30:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:30:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:30:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:30:36,825 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:30:36,826 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:30:36,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:36 BoogieIcfgContainer [2019-09-20 13:30:36,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:30:36,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:30:36,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:30:36,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:30:36,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:34" (1/3) ... [2019-09-20 13:30:36,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b95228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:36, skipping insertion in model container [2019-09-20 13:30:36,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:35" (2/3) ... [2019-09-20 13:30:36,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b95228f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:36, skipping insertion in model container [2019-09-20 13:30:36,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:36" (3/3) ... [2019-09-20 13:30:36,838 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2019-09-20 13:30:36,849 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:30:36,859 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:30:36,876 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:30:36,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:30:36,902 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:30:36,902 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:30:36,902 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:30:36,902 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:30:36,903 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:30:36,903 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:30:36,903 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:30:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-09-20 13:30:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:30:36,939 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:36,941 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:36,943 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash -743083680, now seen corresponding path program 1 times [2019-09-20 13:30:36,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,015 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:30:37,365 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,375 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:37,395 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 2 states. [2019-09-20 13:30:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,427 INFO L93 Difference]: Finished difference Result 161 states and 187 transitions. [2019-09-20 13:30:37,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:37,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-09-20 13:30:37,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,443 INFO L225 Difference]: With dead ends: 161 [2019-09-20 13:30:37,443 INFO L226 Difference]: Without dead ends: 150 [2019-09-20 13:30:37,445 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-20 13:30:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-20 13:30:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-20 13:30:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2019-09-20 13:30:37,501 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 52 [2019-09-20 13:30:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,501 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2019-09-20 13:30:37,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2019-09-20 13:30:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:30:37,506 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,506 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:37,506 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1294042386, now seen corresponding path program 1 times [2019-09-20 13:30:37,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,510 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:30:37,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:30:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:30:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:37,629 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand 3 states. [2019-09-20 13:30:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:37,656 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2019-09-20 13:30:37,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:30:37,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-20 13:30:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:37,662 INFO L225 Difference]: With dead ends: 141 [2019-09-20 13:30:37,663 INFO L226 Difference]: Without dead ends: 141 [2019-09-20 13:30:37,663 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:30:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-20 13:30:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-20 13:30:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-20 13:30:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-09-20 13:30:37,687 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 53 [2019-09-20 13:30:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:37,688 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-09-20 13:30:37,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:30:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-09-20 13:30:37,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-20 13:30:37,697 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:37,698 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:37,699 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:37,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:37,699 INFO L82 PathProgramCache]: Analyzing trace with hash 593618756, now seen corresponding path program 1 times [2019-09-20 13:30:37,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:37,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:37,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:37,703 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:37,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:37,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:30:37,855 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:37,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:30:37,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:30:37,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:30:37,856 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 7 states. [2019-09-20 13:30:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:38,281 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2019-09-20 13:30:38,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:30:38,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-09-20 13:30:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:38,284 INFO L225 Difference]: With dead ends: 141 [2019-09-20 13:30:38,285 INFO L226 Difference]: Without dead ends: 141 [2019-09-20 13:30:38,285 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-09-20 13:30:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-09-20 13:30:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-09-20 13:30:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2019-09-20 13:30:38,299 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 58 [2019-09-20 13:30:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:38,300 INFO L475 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2019-09-20 13:30:38,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:30:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2019-09-20 13:30:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-09-20 13:30:38,302 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:38,303 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:38,303 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:38,304 INFO L82 PathProgramCache]: Analyzing trace with hash -16856487, now seen corresponding path program 1 times [2019-09-20 13:30:38,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:38,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:38,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:38,310 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:38,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:38,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:38,509 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:38,511 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:38,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:38,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:38,512 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 5 states. [2019-09-20 13:30:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:39,136 INFO L93 Difference]: Finished difference Result 254 states and 293 transitions. [2019-09-20 13:30:39,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:39,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2019-09-20 13:30:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:39,144 INFO L225 Difference]: With dead ends: 254 [2019-09-20 13:30:39,145 INFO L226 Difference]: Without dead ends: 254 [2019-09-20 13:30:39,145 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:30:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-09-20 13:30:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2019-09-20 13:30:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-09-20 13:30:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2019-09-20 13:30:39,190 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 71 [2019-09-20 13:30:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:39,191 INFO L475 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2019-09-20 13:30:39,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2019-09-20 13:30:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-20 13:30:39,194 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:39,197 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:39,201 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:39,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1762317239, now seen corresponding path program 1 times [2019-09-20 13:30:39,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:39,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:39,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,205 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:39,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:39,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:39,323 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:39,325 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:39,327 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 6 states. [2019-09-20 13:30:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:39,540 INFO L93 Difference]: Finished difference Result 369 states and 425 transitions. [2019-09-20 13:30:39,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:30:39,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2019-09-20 13:30:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:39,545 INFO L225 Difference]: With dead ends: 369 [2019-09-20 13:30:39,545 INFO L226 Difference]: Without dead ends: 369 [2019-09-20 13:30:39,546 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2019-09-20 13:30:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2019-09-20 13:30:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2019-09-20 13:30:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 421 transitions. [2019-09-20 13:30:39,604 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 421 transitions. Word has length 85 [2019-09-20 13:30:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:39,606 INFO L475 AbstractCegarLoop]: Abstraction has 365 states and 421 transitions. [2019-09-20 13:30:39,606 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 421 transitions. [2019-09-20 13:30:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:39,609 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:39,610 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:39,610 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash 25171709, now seen corresponding path program 1 times [2019-09-20 13:30:39,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:39,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:39,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:39,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:39,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:39,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:30:39,782 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:39,783 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:30:39,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:30:39,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:30:39,783 INFO L87 Difference]: Start difference. First operand 365 states and 421 transitions. Second operand 6 states. [2019-09-20 13:30:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,039 INFO L93 Difference]: Finished difference Result 571 states and 674 transitions. [2019-09-20 13:30:40,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:30:40,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2019-09-20 13:30:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,049 INFO L225 Difference]: With dead ends: 571 [2019-09-20 13:30:40,050 INFO L226 Difference]: Without dead ends: 571 [2019-09-20 13:30:40,050 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-09-20 13:30:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 553. [2019-09-20 13:30:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2019-09-20 13:30:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 651 transitions. [2019-09-20 13:30:40,104 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 651 transitions. Word has length 89 [2019-09-20 13:30:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,104 INFO L475 AbstractCegarLoop]: Abstraction has 553 states and 651 transitions. [2019-09-20 13:30:40,104 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:30:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 651 transitions. [2019-09-20 13:30:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:40,111 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,111 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,112 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash -897511874, now seen corresponding path program 1 times [2019-09-20 13:30:40,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,116 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:40,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:30:40,230 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:30:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:30:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:40,233 INFO L87 Difference]: Start difference. First operand 553 states and 651 transitions. Second operand 5 states. [2019-09-20 13:30:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,276 INFO L93 Difference]: Finished difference Result 563 states and 661 transitions. [2019-09-20 13:30:40,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:30:40,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2019-09-20 13:30:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,285 INFO L225 Difference]: With dead ends: 563 [2019-09-20 13:30:40,287 INFO L226 Difference]: Without dead ends: 563 [2019-09-20 13:30:40,288 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:30:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-09-20 13:30:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 557. [2019-09-20 13:30:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-09-20 13:30:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 654 transitions. [2019-09-20 13:30:40,316 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 654 transitions. Word has length 89 [2019-09-20 13:30:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,317 INFO L475 AbstractCegarLoop]: Abstraction has 557 states and 654 transitions. [2019-09-20 13:30:40,317 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:30:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 654 transitions. [2019-09-20 13:30:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-09-20 13:30:40,319 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,319 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,319 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1741517376, now seen corresponding path program 1 times [2019-09-20 13:30:40,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:30:40,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:30:40,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:30:40,405 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,406 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:30:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:30:40,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:30:40,409 INFO L87 Difference]: Start difference. First operand 557 states and 654 transitions. Second operand 9 states. [2019-09-20 13:30:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,470 INFO L93 Difference]: Finished difference Result 574 states and 677 transitions. [2019-09-20 13:30:40,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:30:40,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2019-09-20 13:30:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,474 INFO L225 Difference]: With dead ends: 574 [2019-09-20 13:30:40,474 INFO L226 Difference]: Without dead ends: 574 [2019-09-20 13:30:40,475 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:30:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-09-20 13:30:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 564. [2019-09-20 13:30:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-09-20 13:30:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 661 transitions. [2019-09-20 13:30:40,516 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 661 transitions. Word has length 89 [2019-09-20 13:30:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,517 INFO L475 AbstractCegarLoop]: Abstraction has 564 states and 661 transitions. [2019-09-20 13:30:40,517 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:30:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 661 transitions. [2019-09-20 13:30:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-20 13:30:40,519 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:30:40,519 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:30:40,520 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:30:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash -124080585, now seen corresponding path program 1 times [2019-09-20 13:30:40,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:30:40,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:30:40,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:30:40,522 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:30:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:30:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:30:40,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:30:40,618 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:30:40,619 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2019-09-20 13:30:40,621 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [94], [110], [114], [115], [116], [131], [134], [136], [145], [149], [153], [156], [161], [167], [169], [175], [178], [201], [203], [206], [211], [212], [213], [214], [216], [221], [223], [224], [230], [234], [267], [268], [278], [281], [283], [286], [296], [299], [303], [304], [307], [308], [309], [332], [334], [335], [402], [403], [413], [415], [420], [422], [425], [427], [432], [439], [447], [448], [449], [450], [451], [452], [453], [454], [455], [495], [496], [497], [498], [503], [507], [508], [511], [512], [515], [516], [517], [523], [524], [525], [526], [533], [535], [536], [541], [542], [543], [544], [545], [546], [547], [549], [550], [551] [2019-09-20 13:30:40,682 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:30:40,682 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:30:40,784 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:30:40,787 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 126 variables. [2019-09-20 13:30:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:30:40,792 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:30:40,840 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:30:40,840 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:30:40,845 INFO L420 sIntCurrentIteration]: We unified 100 AI predicates to 100 [2019-09-20 13:30:40,845 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:30:40,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:30:40,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2019-09-20 13:30:40,846 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:30:40,847 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:30:40,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:30:40,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:40,847 INFO L87 Difference]: Start difference. First operand 564 states and 661 transitions. Second operand 2 states. [2019-09-20 13:30:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:30:40,848 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:30:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:30:40,848 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 101 [2019-09-20 13:30:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:30:40,849 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:30:40,849 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:30:40,849 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:30:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:30:40,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:30:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:30:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:30:40,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2019-09-20 13:30:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:30:40,851 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:30:40,851 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:30:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:30:40,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:30:40,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:40 BoogieIcfgContainer [2019-09-20 13:30:40,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:30:40,860 INFO L168 Benchmark]: Toolchain (without parser) took 6230.13 ms. Allocated memory was 141.6 MB in the beginning and 309.9 MB in the end (delta: 168.3 MB). Free memory was 87.7 MB in the beginning and 225.8 MB in the end (delta: -138.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,861 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.13 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 87.5 MB in the beginning and 164.0 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,863 INFO L168 Benchmark]: Boogie Preprocessor took 109.99 ms. Allocated memory is still 199.8 MB. Free memory was 164.0 MB in the beginning and 159.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,864 INFO L168 Benchmark]: RCFGBuilder took 1315.53 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 159.7 MB in the beginning and 187.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,865 INFO L168 Benchmark]: TraceAbstraction took 4027.34 ms. Allocated memory was 227.5 MB in the beginning and 309.9 MB in the end (delta: 82.3 MB). Free memory was 187.0 MB in the beginning and 225.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:30:40,869 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.13 ms. Allocated memory was 141.6 MB in the beginning and 199.8 MB in the end (delta: 58.2 MB). Free memory was 87.5 MB in the beginning and 164.0 MB in the end (delta: -76.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.99 ms. Allocated memory is still 199.8 MB. Free memory was 164.0 MB in the beginning and 159.7 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1315.53 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 159.7 MB in the beginning and 187.0 MB in the end (delta: -27.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4027.34 ms. Allocated memory was 227.5 MB in the beginning and 309.9 MB in the end (delta: 82.3 MB). Free memory was 187.0 MB in the beginning and 225.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 549]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1406 SDtfs, 697 SDslu, 3516 SDs, 0 SdLazy, 678 SolverSat, 215 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 1.13 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 687 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 678 ConstructedInterpolants, 0 QuantifiedInterpolants, 87130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...